I haven't binary searched yet to try and find what revision did this, but at some point recently something stopped working with respect to the About option in Deskbar. With the most recent builds, it does nothing unless I first go into /boot/beos/apps and load AboutSystem manually by double clicking there. After this, loading it via Deskbar works. I thought apps launched this way are located by querying for the app_sig? Regards, Rene